How to get older Donation Edition and key file.

[tuka]

Hi.
I donated to this software today.
And I received link about Installer and key file of newest version.
But I'm using an older Windows OS.
I need use version 10.11.
Can I get Installer and key file about this version?
Regards.

[Darth Agnon]

The installer is still available from the archives on the homepage, but I don't know about a license; I'm wondering the same myself.